what if: Sibling Infiltration Terminator Prototype

by Writer of Angelus

This is to be a challenge, if you will for you all. Concerning Terminator: Salvation, what if Marcus wasnt one of a kind? He had a 'sister/brother' model or a actual brother/sister that was also made into a Infiltration Prototype?

FanFic Idea for Terminator Salvation: A what if: Sibling Infiltration Terminator Prototypes?

As the title states, what if in Terminator Salvation, there was not one, but two Infiltration prototypes, and how do you think it would have affected the movie? To have another Terminator, same design as Marcus? How would that affect the events of Salvation? Open to all!